Return object with name objName. If
object is not found in the object dictionary, then
object finders are used to try to find the object.
If object is found by an object finder, then it is put
into the object dicitonary. If there is no object with
given name, nil is returned.
Enable or disable creation of unknown objects.
Normally you get nil if you request
for non-existant object. If flag is
YES then by requesting non-existant
object, name for that object is created and it is
set no STNil.
Note: This method will be probably removed (moved
to Smalltalk language bundle).